Heater relays still blowing after changing pollin filters

NOT A RV ,right?
fuse # not told nor he AMPs rating. (hard job this)
on all cars, most fuse have not just one, load.
the fuse name is can only fit one name there, even up to 10 loads on 1 fuse. the service manual covers he wiring fully
scan the PCM so it can tell you what is shorted"? DTC errors.
F350 not superduty version (wild guess me)
I have trouble finding the 7.3L wiring in total.
ok found 35 pages of schematics on this. wowl
wish I knew fuse number F# that blew.
fuel heater means what?
Glow Plugs
intake induction heater MIAH
02 oxygen sensor heaters?
fuel filter bowl or water separator? heater?
fuel filter/water separator assembly., yes.
found it. I did, fuse 30/34 and 30 amps,in battery JB.
runs what you said and
waste gate solenoid. bingo shorted
+ 2 relay coils only 86 pins, I bet are not bad. PCM and IDM.
bingo

There is a relay that powers the blower motor circuit . Left I/P fuse box , do you know where that is ? The relay is IGN 3 relay .
Fuse Block- I/P - Left
LF of the passenger compartment, behind the kick panel
IGN 3 RELAY
--
IGN3, HVAC CNTRL MODULE
IGN 3
10A
HVAC CNTRL MODULE, TC SW., HTD SEAT SW.
Does your car have Manual or automatic climate control ?

some air con systems have a pollin filter in the ac system . I would recommend changing that as well as check the condensation out let pipe to the out side off the vehicle . some time that drain may be blocked , a dust gun can help un block in short bursts of air . hope this is of some help

its located on the right cowl panel (where your wipers are ) they usally have three 20 torx screws holding it down the cover that is remove the cover pull it up and outward ( clean out debris first ) so debris wont fall into blower motor and reasemble watch tab on right side upon installition

do you mean the pollin filter? slotted in the side of the air vent mix assembly PS or in the planium chamber near wipers

The dodge Durango does not have a cabin air filter (pollen/dust filter) The only Dodge to have an dealer option to include one is the Dodge Caravan

sounds like a controll acuator is broken or loose in the heater system

if you have to change it,you will need the service manual.but before you do change it look for a sensor,relay,or a fuse going to the heater motor.if the heater motor has not been beaten up than i would not change it .it could have gotten wet and blowen the fuse relay or sensor

Check the heater fan resistor.It is usually under the dash on the heater box near the interior fan.Common problem and not very expensive but depending in which country you live

you need to begin by changing the thermostat. if you dont know how go to an autozone and they will assist you.

if that doesnt solve the problem you need to change the heater/ac blower relay.